Service and System Aspects

The TSG Service and System Aspects (TSG-SA) is responsible for the overall architecture and service capabilities of systems based on 3GPP specifications and, as such, has a responsibility for cross TSG co-ordination.

Terms of reference

The latest terms of reference were approved at SA#36 in document SP-070453.

The technical specification development work within 3GPP is accomplished by Technical Specification Groups (TSGs) according to the principles and rules contained in the Project reference documentation (Partnership Project Description, Partnership Project Description, Partnership Project Agreement, and Partnership Project Working Procedures).

In particular the TSGs report to the Project coordination Group (PCG), and may organize their work in Working Groups and liaise with other groups as appropriateEach TSG has the responsibility to develop, approve and maintain the specifications within its terms of reference.

The TSG Service and System Aspects (TSG-SA) is responsible for the overall architecture and service capabilities of systems based on 3GPP specifications and, as such, has a responsibility for cross TSG co-ordination. Any difficulty that may appear in this role shall be reported to the PCG.

Specifically it has a responsibility for:

Definition, evolution and maintenance of the overall system architecture including the assignment of functions to particular subsystems (UTRAN, GERAN, CN, terminal, SIM/USIM), identification of key information flows and definition of required bearers and services offered by these different subsystems.

Development of a framework for services, service capabilities, service architecture, charging and consideration of need for «default» services and/or applications

Definition of a security framework and review of security aspects of overall system

Management of work items including assignment of tasks to other TSGs and monitoring of progress

More specifically, TSG-SA will address the following areas of work:

Services Capabilities

Definition of service and feature requirements

Development of service capabilities and a service architecture for cellular, fixed and cordless applications

Ensure an open environment for industry wide development of the IP Multimedia Subsystem (IMS)

Stage 1 and 2 description of:

Charging and Accounting

Network Management

Security Aspects

Architecture

Definition, evolution and maintenance of the overall architecture including the assignment of functions to particular subsystems (e.g. UTRAN, GERAN, CN, Terminal, SIM/USIM) and identification of key information flows.

In co-operation with the other TSGs, define required services, service capabilities and bearers capabilities offered by the different subsystems, including Quality of Service requirements for access to both packet and circuit switched networks.

CODEC aspects

Principles for definition of end-to-end transmission.

Definition, evolution and maintenance of relevant specifications.

Project Coordination

High level co-ordination of the work performed in other TSGs and monitoring of progress.